14.1 A polymer solution was cooled very slowly until phase separation took place to give two phases in equilibrium. Subsequent analysis of the phases showed that the volume fractions of polymer in the phases were = 0.89 and 2 = 0.01, respectively. Using the equation for AG₁ given in Problem 10.1, together with the equilibrium condition AG=AG, calculate an estimate (two significant figures) of the Flory-Huggins polymer-solvent interaction param- eter for the conditions of phase separation.

14.1 A polymer solution was cooled very slowly until phase separation took place to give two phases in equilibrium. Subsequent analysis of the phases showed that the volume fractions of polymer in the phases were = 0.89 and 2 = 0.01, respectively. Using the equation for AG₁ given in Problem 10.1, together with the equilibrium condition AG=AG, calculate an estimate (two significant figures) of the Flory-Huggins polymer-solvent interaction param- eter for the conditions of phase separation.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter23: Polymeric Materials And Soft Condensed Matter

Section: Chapter Questions

Problem 14P

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